Gaspar Cassadó i Moreu (30 September 1897 – 24 December 1966) was a Spanish cellist and composer of the early 20th century from Catalonia. He was born in Barcelona to a church musician father, Joaquim Cassadó, and began taking cello lessons at age seven. When he was nine, he played in a recital where Pablo Casals was in the audience; Casals immediately offered to teach him. The city of Barcelona awarded him a scholarship so that he could study with Casals in Paris. He was also the author of several notable musical hoaxes, notably the "Toccata" that he attributed to Frescobaldi.